Features of Myocardial Remodeling and Changes in the Blood Lipid Spectrum in Experimental Doxorubicin-Induced Cardiomyopathy and Atorvastatin Administration

Structural myocardial reorganization and changes in the blood lipid spectrum in rats were studied after administration of a single sublethal dose of doxorubicin (15 mg/kg) alone and in combination with atorvastatin (20 mg/kg/day over 7 days). It was established that doxorubicin induced the development of dyslipidemia in experimental animals (the concentrations of total cholesterol, triglycerides, and VLDL increased by 2.2, 2.0, and 1.96 times, respectively; the atherogenic coefficient increased by 3.4 times by day 7 of the experiment). In animals with experimental anthracycline cardiomyopathy treated with atorvastatin, the concentrations of the main components of the blood lipid spectrum increased less markedly. Atorvastatin alone induces moderate myocardial remodeling in comparison with more pronounced changes in the structural organization of the myocardium in rats treated with doxorubicin alone. Course treatment with atorvastatin under conditions of doxorubicin-induced cardiomyopathy reduced the severity of myocardial remodeling: the decrease in the volume density of cardiomyocytes and the increase in the volume density of the connective tissue were less pronounced in the dynamics of the experiment.

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Correspondence to M. G. Klinnikova.

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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 170, No. 7, pp. 33-39, July, 2020

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Klinnikova, M.G., Koldysheva, E.V., Tursunova, N.V. et al. Features of Myocardial Remodeling and Changes in the Blood Lipid Spectrum in Experimental Doxorubicin-Induced Cardiomyopathy and Atorvastatin Administration. Bull Exp Biol Med (2020). https://doi.org/10.1007/s10517-020-04997-1

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Key Words

  • myocardium
  • remodeling
  • doxorubicin
  • atorvastatin
  • blood lipid spectrum